The HALO Active-Airflow Crib Mattress is the only crib mattress of its kind that incorporates both an air filter and a fan to provide a safer sleeping environment for your baby. The Active- Airflow Replaceable Filter purifies the air, while the fan gently pushes fresh air up through the mesh sleep surface removing exhaled carbon dioxide away from your baby's face. Reduces the Risk of Rebreathing The HALO Active-Airflow Crib Mattress is the only mattress clinically proven to reduce the risk of rebreathing exhaled carbon dioxide – which can contribute to SIDS. (Results published in Pediatrics, the official journal of the American Academy of Pediatrics.) Your Baby Breathes Pure, Fresh Air Our patented Active-Airflow design allows fresh purified air to surround your baby while in the crib. It supplies a gentle flow of air to the sleep surface to reduce pockets of carbon dioxide that could accumulate near your baby's face, creating a "clean" breathing zone. Removes Over 90% of Airborne Allergens The high-efficiency air purification system removes mold, pollen, dust and more. Our Active-Airflow Replacement Filter (included) is designed to deliver the cleanest air possible. Secure-Fitâ?¢ Mattress Pad (included) – Ensures Safety &Comfort The unique patented deep pocket design keeps corners and pad secure and tight for baby's safety and comfort. While at the same time it has been specially designed for optimal airflow. Hum Your Baby to Sleep A small UL approved fan inside the mattress provides a gentle airflow and soothing hum that helps baby sleep. Features: Fits any standard full-size U.S. crib – Mattress dimensions: 27 3/8"W x 51 3/4"L x 5 7/8"H Exceeds Federal Mattress Flammability Standard Doctors recommend reducing early exposure to airborne allergens to help reduce the risk of asthma and allergies to infants Standard crib sheets may be used with the HALO Active-Airflow Crib Mattress with the exception of a waterproof sheet Easy to clean Gift Wrap not available. Shipping Note: This item ships via UPS Ground within contiguous United States only. Cannot be shipped to AK/HI, PO boxes, US territories, or APO/FPO addresses.